Product Introduction

The ABB UNITROL 1010 3BHE035301R1002 UNS0121A-Z,V1 is a compact microprocessor-based automatic voltage regulator designed for synchronous generator excitation control. As a core component of ABB UNITROL excitation series, it delivers precise voltage regulation, excitation current control and multiple protection functions for small and medium generators. With flexible communication interfaces and robust anti-interference design, this controller ensures stable grid connection and safe operation for hydropower, diesel generator sets and industrial captive power plants.

Content Details

ABB UNITROL 1010 3BHE035301R1002 UNS0121A-Z,V1 is a complete excitation control unit for synchronous generators. It adopts advanced digital control algorithms to realize automatic voltage regulation (AVR), field current regulation and reactive power control. The controller continuously samples generator terminal voltage and current signals, calculates control output in real time and sends firing commands to the thyristor rectifier bridge to adjust generator excitation current, stabilizing output voltage and reactive power during load fluctuation. It integrates abundant built-in limiting and protection functions including excitation current limit, V/Hz limit, PQ limit and overvoltage protection. These protective logics prevent generators from operating beyond safe working ranges and effectively avoid equipment damage caused by abnormal grid conditions. The device supports multiple communication protocols such as Modbus TCP and RS485, enabling seamless data exchange with upper SCADA and monitoring systems for remote parameter checking, fault recording and online configuration. Equipped with comprehensive self-diagnosis function, it monitors power supply status, signal input loops, internal processor operation and communication links continuously. When detecting signal loss, power abnormality or internal hardware fault, it will trigger alarm signals and store fault event records for later analysis. Manufactured with industrial-grade components and conformal coating treatment, this excitation controller features strong shock resistance, vibration resistance and excellent EMC performance. It can operate reliably under wide temperature range and adapt to high electromagnetic interference environment inside power control cabinets of hydropower stations, thermal power plants and industrial self-generation systems. The compact panel mounting design simplifies installation and wiring work. Human-friendly local LCD display and physical operation keys allow engineers to check real-time operating data, adjust parameters and read fault codes on site without extra configuration tools. Widely used in generator excitation control, grid-connected power generation and backup power supply projects. Before shipment, each ABB UNITROL 1010 unit undergoes full functional testing, closed-loop simulation test and aging inspection, eliminating hidden hardware risks to guarantee long-term stable 24-hour continuous operation of generator sets.

Tags: UNITROL 1010 3BHE035301R1002 UNS0121A-Z V1

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